#include<stdio.h>
#include<unistd.h>
#include<string.h>
#include<stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>


int main()
{
    const char* filename="./record.txt";
    struct stat fileStatus;
    stat(filename,&fileStatus);

    printf("file size = %ld\n",fileStatus.st_size);




    return 0;
}